register and balances accept bpi

ledger/delta.go

@@ -28,15 +28,6 @@ func newDelta(d, desc, name string, v float64, c string, isSet bool) Delta {
 	}
 }
 
-func (delta Delta) Plus(other Delta) Delta {
-	return Delta{
-		Date:     other.Date,
-		Name:     delta.Name,
-		Value:    delta.Value + other.Value,
-		Currency: other.Currency,
-	}
-}
-
 func (delta Delta) Debug() string {
 	return fmt.Sprintf("{@%s %s:\"%s\" %s%.2f %s}", delta.Date, delta.Name, delta.Description, func() string {
 		if !delta.isSet {